Setting up an AdHoc Network

I am trying to setup an adhoc connection on my computer and everytime I go
through the wizard and try to create the connection I enter the name of the
connection, the security type, and then the password. After I click next all
I get is a blank screen that says Windows cannot setup the specified
connection.

I am trying set this up so that I can use my computers internet connection
on my iPod Touch. Can anyone help me out. Thank you.